One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,6,7)(3,9,11,5)(4,8,12,14)(10,15,16,13)(17,18,22,25)(19,20,23,28)(21,24,30,32)(26,27,29,31)(33,34,39,37)(35,42,45,40)(36,38,47,41)(43,44,46,48)(2,7)(5,9)(8,14)(13,15)(17,19,22,23)(18,20,25,28)(21,29,30,26)(24,31,32,27)(34,37)(38,41)(40,42)(44,48)(4,12)(8,14)(10,16)(13,15)(17,19)(18,20)(21,26)(22,23)(24,27)(25,28)(29,30)(31,32)(33,35,39,45)(34,40,37,42)(36,46,47,43)(38,44,41,48)(1,3)(2,5)(4,10)(6,11)(7,9)(8,13)(12,16)(14,15)(33,36,39,47)(34,41,37,38)(35,43,45,46)(40,44,42,48)(1,4,6,12)(2,8,7,14)(3,10,11,16)(5,13,9,15)(17,20)(18,23)(19,25)(21,27)(22,28)(24,29)(26,32)(30,31)(33,37,39,34)(35,40,45,42)(36,38,47,41)(43,44,46,48)(1,5)(2,3)(4,13)(6,9)(7,11)(8,10)(12,15)(14,16)(17,21)(18,24)(19,26)(20,27)(22,30)(23,29)(25,32)(28,31)(33,38)(34,36)(35,44)(37,47)(39,41)(40,46)(42,43)(45,48) involution — undirectedA Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.